JP2017180898A5

JP2017180898A5 -

Info

Publication number: JP2017180898A5
Application number: JP2016065010A
Authority: JP
Filing date: 2016-03-29
Publication date: 2019-04-18
Anticipated expiration: 2036-03-29

Description

本発明の第一の態様によれば、燃焼器は、軸線に沿って延び、下流側に向かって燃料を噴射する第一ノズルと、前記第一ノズルの下流側端部を外周側から覆う保炎器と、前記保炎器の外周側で、軸線の周方向に間隔をあけて配列された複数の第二ノズルと、を備え、前記保炎器は、上流側から下流側に向かうにしたがって拡径するコーン部と、該コーン部の下流側の端縁から径方向外側に向かって広がるフランジ部と、を有し、少なくとも前記フランジ部には、該フランジ部を軸線方向に貫通する貫通部が形成されており、前記貫通部を下流側から覆う調整板を有し、該調整板には前記貫通部よりも小さな開孔面積を有するとともに、該貫通部に連通された調整貫通部が形成されている。 According to the first aspect of the present invention, the combustor extends along the axis and holds the first nozzle for injecting fuel toward the downstream side and the downstream end of the first nozzle from the outer circumferential side to cover And a plurality of second nozzles arranged at intervals along the circumferential direction of the axial line on the outer circumferential side of the flame stabilizer, the flame stabilizer going from the upstream side toward the downstream side A penetrating portion having a cone portion expanding in diameter, and a flange portion extending radially outward from an end edge on the downstream side of the cone portion, and at least the flange portion is a penetrating portion penetrating the flange portion in the axial direction Is formed, and has an adjusting plate which covers the penetrating portion from the downstream side, and the adjusting plate has an opening area smaller than that of the penetrating portion, and an adjusting penetrating portion communicated with the penetrating portion is formed It is done.

この構成によれば、少なくともフランジ部に貫通部が形成されているため、保炎器が火炎の熱に曝された場合であっても、貫通部が当該貫通部の周辺部分における熱応力を吸収することによって熱変形を抑制することができる。すなわち、フランジ部以外の部分に上記熱変形の影響が及ぶ可能性を低減することができる。
また、調整貫通部が形成された調整板によって貫通部が下流側から覆われている。これにより、貫通部によって熱応力を逃がすことができることに加えて、調整板の調整貫通部によって貫通部を通過する空気の量を調整することができる。 According to this configuration, the penetrating portion is formed at least in the flange portion, so that even if the flame holder is exposed to the heat of the flame, the penetrating portion absorbs the thermal stress in the peripheral portion of the penetrating portion. By doing this, thermal deformation can be suppressed. That is, it is possible to reduce the possibility that the thermal deformation affects the portion other than the flange portion.
Moreover, the penetration part is covered from the downstream side by the adjustment plate in which the adjustment penetration part was formed. Thereby, in addition to the thermal stress being able to be released by the penetration part, the amount of air passing through the penetration part can be adjusted by the adjustment penetration part of the adjusting plate.

Claims

A first nozzle extending along the axis and injecting fuel toward the downstream side;
A flame stabilizer which covers the downstream end of the first nozzle from the outer peripheral side;
A plurality of second nozzles arranged at intervals in the circumferential direction of the axis line on the outer circumferential side of the flame stabilizer;
Equipped with
The flame stabilizer has a cone portion that increases in diameter from the upstream side toward the downstream side, and a flange portion that extends radially outward from the downstream end edge of the cone portion,
At least the flange portion is formed with a penetrating portion that penetrates the flange portion in the axial direction ,
A combustor comprising: an adjusting plate which covers the through portion from the downstream side, the adjusting plate having an opening area smaller than that of the through portion, and an adjusting through portion communicated with the through portion .

A plurality of extension pipes provided on the downstream side of each of the second nozzles and having a tubular shape extending in the axial direction and arranged at intervals in the circumferential direction of the axis,
The combustor according to claim 1, wherein the circumferential position at which the through portion is provided on the flange portion is between a pair of extension pipes adjacent to each other.

The through portion is a flange portion slit extending inward from the radial outer side of the flange portion, and a cone portion slit formed in a region including the downstream end of the cone portion in communication with the flange portion slit The combustor according to claim 1 or 2, which is

The combustor according to claim 1, wherein the penetration portion is a hole which penetrates the flange portion in the axial direction.

The combustor according to any one of claims 1 to 4, wherein a plurality of the penetrating portions are formed at intervals on at least the flange portion in the circumferential direction of the axis.

A compressor producing high pressure air,
The combustor according to any one of claims 1 to 5 , wherein combustion gas is generated by mixing high pressure air and fuel with one another and burning it.
A turbine driven by the combustion gas,
A gas turbine equipped with